Set a large pan of salted water over heat to bring to a boil.,Heat a frying pan, cut each sausage into 5 chunks and cook them over a medium high heat for approximately 10 minutes until cooked through.,Meanwhile, heat the oil in a frying pan and fry the onions for 5 minutes, add the garlic and fennel seeds and cook for another 5 minutes.,At the same time, cook the penne in the boiling water for 8 - 10 minutes or until tender.,______